Answer:
c. construction of tunnels, highways, courthouses, and airports.
Explanation:
The Civil Works Administration or the CWA was a [tex]\text{short-lived job creation program}[/tex] that was established by [tex]\text{New Deal }[/tex] during the [tex]\text{Great Depression in the United States }[/tex] in order to rapidly create the mostly manual-work jobs for millions and millions of the unemployed workers during that time. This project was created under the [tex]\text{Federal Emergency Relief Administration.}[/tex]
This project was designed to bring back the jobless workers into work by providing employment in different sectors. It employed around 4 million unemployed workers during the Great Depression period in the constructions of tunnels, highways and also in the construction of the courthouses and the airports.
So, the correct option is (c).